28
EB 3135-1 EN
Start-up and operation
6
Start-up and operation
Î
See Fig. 3
6.1
Start-up
Re
Risk of personal injury due to process me-
dium escaping under pressure.
−
First start up the regulator after mounting
all parts.
Risk of burn injuries due to hot or cold com-
ponents and pipeline.
Regulator components and the pipeline may
become very hot or cold. Risk of burn inju-
ries.
Î
Allow components and pipelines to cool
down or heat up.
Î
Wear protective clothing and safety
gloves.
Risk of personal injury due to pressurized
components and process medium escaping
under pressure.
Î
Do not loosen the control line while the
valve is pressurized.
Before start-up or putting the valve back into
service, make sure the following conditions
are met:
−
The regulator is properly installed into
the pipeline (see section 5).
−
The leak and function tests have been
completed successfully.
DANGER
!
WARNING
!
WARNING
!
The prevailing conditions in the plant section
affected meet the regulator sizing require
-
ments (see information under 'Intended use'
on page 5).
6.1.1
Pipeline flushing
We recommend additionally flushing the
pipeline with installed regulator before start-
up.
Rinsing the plant
1.
After filling the plant, first completely
open the consumer
2.
Adjust the maximum flow rate at the reg
-
ulator (see section 6.4).
3.
Rinse out the pipeline at full flow rate for
several minutes.
4. Check the strainer (e.g. measure the
pressure drop) and clean it, if necessary.
6.1.2 Installing the valve
Î
See Fig. 3
1. Close the shut-off valves in the pipeline
while the valve is being installed.
2. Remove the protective caps from the
valve ports, if fitted, before installing the
valve.
3. Install the valve into the pipeline. The ar-
row on the valve indicates the direction
of flow.
4. Make sure that the correct gaskets are
used.
5.
Bolt the pipe to the valve free of stress.
